https://github.com/as/edit
A stand-alone implementation of the Acme text editor's command language.
https://github.com/as/edit
acme command edit language regular-expression sam structural
Last synced: about 2 months ago
JSON representation
A stand-alone implementation of the Acme text editor's command language.
- Host: GitHub
- URL: https://github.com/as/edit
- Owner: as
- License: bsd-3-clause
- Created: 2017-08-08T02:10:14.000Z (almost 8 years ago)
- Default Branch: master
- Last Pushed: 2018-10-21T21:39:06.000Z (over 6 years ago)
- Last Synced: 2024-08-01T13:16:37.808Z (10 months ago)
- Topics: acme, command, edit, language, regular-expression, sam, structural
- Language: Go
- Homepage:
- Size: 41 KB
- Stars: 32
- Watchers: 3
- Forks: 2
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-acme - edit - A stand-alone implementation of the Acme text editor's command language in Go (Inspired By)
README
# edit
Edit is an implementation of the Acme/Sam command language
# usage
```
ed, _ := text.Open(text.NewBuffer())
ed.Insert([]byte("Removing vowels isnt the best way to name things"), 0)
cmd, _ := edit.Compile(",x,[aeiou],d")
cmd.Run(ed)
fmt.Printf("%s\n", ed.Bytes())
// Rmvng vwls snt th bst wy t nm thngs
```
# example
See example/example.go
# reference
Rob Pike pioneered structural regular expressions in the 1980s. The original implementations can be found in his Sam and Acme text editors.
http://doc.cat-v.org/bell_labs/structural_regexps/
http://doc.cat-v.org/bell_labs/sam_lang_tutorial/
[](https://goreportcard.com/report/github.com/as/edit)
# appendix
This implementation now runs 10-1000 times faster
Benchmark before coalescing (2017.09.17)
```
goos: windows
goarch: amd64
BenchmarkChange128KBto64KB-4 1 3531749200 ns/op
BenchmarkChange128KBto128KB-4 1 3784740700 ns/op
BenchmarkChange128KBto128KBNest4x2x1-4 1 3642752800 ns/op
BenchmarkChange128KBto128KBx16x4x1-4 1 3589181900 ns/op
```
After coalescing (current)
```
goos: windows
goarch: amd64
pkg: github.com/as/edit
BenchmarkChange128KBto64KB-4 2 530753100 ns/op
BenchmarkChange128KBto128KB-4 200 6529711 ns/op
BenchmarkChange128KBto128KBNest4x2x1-4 200 6450888 ns/op
BenchmarkChange128KBto128KBx16x4x1-4 200 6333687 ns/op
BenchmarkDelete128KB-4 200000 11720 ns/op
BenchmarkDelete128KBx64-4 20 93447760 ns/op
BenchmarkDelete128KBx8-4 20 68008640 ns/op
BenchmarkDelete128KBx1-4 5 263001000 ns/op
BenchmarkDelete256KBx1-4 2 519648200 ns/op
BenchmarkDelete512KBx1-4 1 1032597800 ns/op
```